Duct Units INSTALLATION AND OPERATING INSTRUCTIONS 03/2012

Transcription

1 Duct Units INSTALLATION AND OPERATING INSTRUCTIONS 03/2012

2 Contents Strana 2 Fans RP Fans... 3 RQ Fans... 5 Fans... 7 RS Fans*... 9 RPH Fans RP Ex, RQ Ex Fans Fan output Controllers TRN Controllers TRRE, TRRD Controllers Exchangers EO, EOS, EOSX Electric Heaters VO Water Heaters SUMX Mixing Sets CHV Water Coolers CHF Direct Coolers Heat Exchangers HRV Plate Heat Exchangers Accessories KFD Bag Filters VFK Insert Air Filters LKR Blade Dampers LKS Blade Dampers LKSX Blade Dampers LKSF Blade Dampers SKX Mixing Sections TKU Attenuators EKP Drop Eliminators Přetlakové klapky PK Pressure Dampers PZ Louvers DV, DK Elastic Connections EP, GK Flanges Humidifi cation Introduction * Instalation instructions for the new RF series of roof fans are available in separate document. Vento duct air handling units are manufactured in accordance with valid Czech and European regulations and technical standards. Vento duct air handling units must be installed and used only in accordance with this documentation. The manufacturer is not responsible for any damages resulting from use other than intended, and the customer bears the risks of such use. The installation and operating documentation must be available for the operating and servicing staff. It is advisable to store this documentation close to the Vento unit.. When handling, installing, wiring, commissioning, repairing or servicing the Vento duct air handling units, it is necessary to observe valid safety rules, standards and generally recognized technical rules. In particular, it is necessary to use personal protective work aids (e.g. gloves) because of sharp edges and corners when performing any handling, installing, dismounting, repairing or checking of Vento duct units. All device connections must comply with the respective safety standards and regulations. Any changes or modifi cations to individual components of the Vento system which could affect its safety and proper functioning are forbidden. Before installing and using the Vento air handling units, it is necessary to familiarize yourself with and observe the directions and recommendations included in the following chapters. The Vento duct air handling units, including their individual parts, are not intended, due to their concept, for direct sale to end customers. Each installation must be performed in accordance with a professional project created by a qualified air-handling designer who is responsible for the proper selection and dimensioning of components concerning their suitability for a given application. The installation and commissioning may be performed only by an authorized company licensed in accordance with generally valid regulations. When disposing of components and materials, it is necessary to observe the respective environmental protection and waste disposal regulations. In case of fi nal device liquidation, it is necessary to follow the policy of differential waste disposal. We recommend metal parts be scrapped and other parts be disposed of in accordance with separated waste regulations. Further information can be found in the Duct Units Catalogue and in the AeroCAD planning software. Up-to-date version of this document is available at website

3 RP Fans Technical Information Operating Conditions, Position The RP fans are designed for indoor and outdoor applications, and to transport air without solid, fi brous, sticky, aggressive, respectively explosive impurities. For outdoor applications it is necessary to fi nish the fans with a protective coating (except rating plates). The transported air must be free of corrosive chemicals or chemicals aggressive to zinc and/or aluminium. The RP fans can work in any position. When positioned under the ceiling, it is advisable to situate the fan with its cup directed downwards to ease access to the motor terminal box. However, if transported air is oversaturated with moisture or if the risk of intensive steam condensation inside the fan exists, it is better to situate the fan's cup upwards while leaving enough servicing space for the motor terminal box. Mechanical Installation The fan must be checked carefully before its installation, especially if it was stored for a longer time. In particular it is necessary to check all parts and cable insulation for damage, and to see whether the rotary parts can rotate freely. It is recommended to insert the DV elastic connections in front of and behind the fan. It is advisable to always place the KFD or VFK air fi lters in front of the fan to protect the fan and duct against dirtying and dust fouling. If the fan is installed in such a way that persons or objects can come into contact with the impeller, the guard grid must be mounted. The fan must be suspended by separate suspensions so that no loading can be transferred to the elastic connections or connected duct. Anchoring to the ceiling with steel anchors and suspension using threaded rods (see fi g. #1), perforated galvanized strips (see fi g. #2) or ancillary construction is recommended. Before installation, paste self-adhesive sealing on to the connecting fl ange face. To connect individual parts of the Vento system, use galvanized screws and nuts M8 (M10 only for RP and RP ). It is necessary to ensure conductive connection of the fl ange Figure 2 Suspension using perforated strips using fan-washers placed on both sides, at least on one fl ange connection. To brace the fl anges with a side longer than 40 cm, it is advisable to connect them in the middle with another screw clamp which prevents fl ange bar gapping. The Wiring The wiring can be performed only by a qualifi ed worker licensed in accordance with national regulations. The fans can be equipped with two types of terminal boxes: a) An all-plastic terminal box fi xed with screws to the fan casing, and equipped with WAGO terminals; max. cross-section of connecting conductors 1.5 mm2 (see fi g. #3). b) A plastic terminal box fi xed with screws to the motor stator, and equipped with screw terminals (see fi g. #4). Figure 3 All-plastic terminal box on the fan casing Figure 1 Anchoring to the ceiling Figure 4 Plastic terminal box on the motor stator 3

4 RP Fans Technical Information Figure 5 Wiring diagram TK TK TK TK L1 N PE Z2 Z1 U1 U2 PE TK TK L1 L2 L3 PE TK TK U1 V1 W1 PE Figure 6 Rubber plug in the inspection opening Rubber plug Arrow indicating the direction of impeller rotation Single-phase fan motor Three-phase fan motor TK thermo-contact terminals U1, U2 single-phase motor supply terminals 1f 230V/50Hz PE protective conductor terminal U1, V1, W1 three-phase motor supply terminals 3d 3x 400V/50Hz The wiring connection to the terminals can be performed following the marking on the motor cables, description of terminals or the label on the terminal box lid (see fi g. #5). The following cables are recommended to connect fan motors: HO5VVH2 - F 2Ax0,75 thermo contact circuit CYKY 3Cx1,5 single-phase motor supply CYKY 4Bx1,5 three-phase motor supply Motor Protection As standard, the permanent monitoring of internal motor temperature is applied in all motors. The limit temperature is monitored by thermal contacts (the TK- -thermo-contacts) situated in the motor winding. The thermo-contacts are miniature thermal tripping elements which after being connected to the protective contactor circuit protect the motor against overheating (damaging) due to phase failure, forced motor braking, current protection circuit breakdown or excessive temperature of transported air. The thermal protection by means of thermo-contacts is complex and reliable providing they are correctly connected. This type of protection is essential especially for speed controlled and frequently started motors and motors highly thermally loaded by hot transported air. Therefore, the fan motors cannot be protected by conventional overcurrent protection elements! The thermo-contact rated loading is 6A / 250V / 50 Hz (cos φ 0.6). Activation and Start-up The fan can be started after its mounting into the duct system for which it has been designed; preferably fully throttled by closing either the intake or discharge to avoid its overloading! (Applicable for fans with non-working area). The fan is loaded by increasing the air flow, i.e. by releasing the throttling. After starting the fan with three-phase motor, the right direction of the impeller rotation must be checked following the direction of the arrow on the fan. To do so, remove the rubber plug from the inspection opening in the fan cup (see fig. #6). The RP fans' impellers rotate always to the left, i.e. counter clockwise (looking through the inspection opening). After starting the fan, the current must also be measured, and it must not exceed the maximum allowed current Imax. stated on the rating plate. If the measured values exceed the given current value, it is necessary to check the duct system regulation. The fans are equipped with thermo-contacts situated in the motor winding; they are connected to the TK terminals. If the motor gets too hot, the thermo-contact will open. The thermo-contact must be connected to the control or regulating system (e.g. control unit, TRN controller or STE, STD relay) which is able to evaluate the failure, and protect the motor against unwanted thermal effects. The proper function of the controller must ensure that after getting cold and the thermo-contact closing, the motor cannot be spontaneously started. Before restarting the fan, it is necessary to check the duct system regulation, electrical parameters of the motor and the entire wiring. If the fans are operated without connection to this protection, our warranty for the damaged motor will become void. Operation, Maintenance and Service During operation it is necessary to check proper functioning of the fan, its smooth running, to keep it and its surroundings clean, and load the fan only within the range given by its output characteristics. If a failure occurs, make sure that the power supply is disconnected, and check the fan for foreign objects inside, and free rotation. If the fan does not run after it has been restarted, the following procedures must be followed depending on the protection system used: If the fan is protected by STE or STD relays: Turn the fan on/off using the buttons on the protecting relay. If the fan is protected by a TRN controller: Turn the fan on/off using the switch on the remote controls of the controller. If the fan is protected by the control unit: Press the unblocking button on the control unit (the horn symbol), and restart the unit. If the fan does not start: Check the wiring, and measure the motor winding impedance. If the motor is damaged, contact your supplier. Warning! When performing any maintenance or repairs, the device must always be disconnected from the power supply! To ensure voltage-free state, the device must be provided with a stand-alone and lockable switch (or with a control unit equipped with such a switch). 4

5 RQ Fans Technical information Operating Conditions, Position The RQ fans are designed for indoor and outdoor applications, and to transport air without solid, fi brous, sticky, aggressive, respectively explosive impurities. For outdoor applications, it is necessary to fi nish the fans with a protective coating (except rating plates). The transported air must be free of corrosive chemicals or chemicals aggressive to zinc and/or aluminium. The RQ fans can work in any position. When positioned under the ceiling, it is advisable to situate the fan with its cup directed downwards to ease access to the motor terminal box. However, if transported air is oversaturated with moisture or if the risk of intensive steam condensation inside the fan exists, it is better to situate the fan's cup upwards while leaving enough servicing space for the motor terminal box. Mechanical Installation The fan must be checked carefully before its installation, especially if it was stored for a longer time. In particular, it is necessary to check all parts and cable insulation for damage, and to see whether the rotary parts can rotate freely. It is recommended to use elastic connections; a DV elastic connection on the discharge side and the DK elastic connection on the intake side. It is advisable to always place an air filter in front of the fan to protect it and the duct against dirtying and dust fouling. If the fan is installed in such a way that persons or objects can Figure 7 Anchoring holes come into contact with the impeller, the guard grid must be mounted. The RQ fans are provided on three sides with anchoring holes to be anchored to the foundation in one of three possible positions (see fi g. #7). The RQ fans can be anchored with four anchoring bolts; however, we recommend using silent-blocks to eliminate the transfer of vibrations. All versions of the RQ fans can work in any position. Before installation, paste self-adhesive sealing onto the connecting fl ange face. To connect individual parts of the Vento system, use galvanized screws and nuts M8. It is necessary to ensure conductive connection of the flange using fan-washers placed on both sides at least on one fl ange connection. Figure 8 All-plastic terminal box on the fan casing Figure 9 Plastic terminal box on the motor stator Figure 10 Rubber plug location Rubber plug Arrow indicating the direction of impeller rotation Figure 11 Wiring diagram L1 N PE single-phase fan motor When using fans with threephase motors, the right direction of rotation must be checked after their connection to the wiring. The inspection opening is situated on the motor cup. The RQ fans' impellers rotate always to the left, i.e. counter clockwise (looking through the inspection opening). The Wiring The wiring can be performed only by a qualifi ed worker licensed in accordance with national regulations. The fans can be equipped with two types of terminal boxes: TK TK TK TK Z2 Z1 U1 U2 PE TK TK L1 L2 L3 PE TK TK U1 V1 W1 PE three-phase fan motor TK thermo-contact terminals U1, U2 single-phase motor supply terminals 1f 230V/50Hz PE protective conductor terminal U1, V1, W1 three-phase motor supply terminals 3d 3x 400V/50Hz 5

6 RQ Fans Operation, Maintenance and Service a) An all-plastic terminal box fi xed with screws to the fan casing, and equipped with WAGO terminals; max. cross-section of connecting conductors 1.5 mm2 (see fi g. #8). b) A plastic terminal box fi xed with screws to the motor stator, and equipped with screw terminals (see fi g. #9). The wiring connection to the terminals can be performed following the marking on the motor cables, the description of terminals or the picture on the terminal box lid (see fi g. #11). The following cables are recommended to connect fan motors: H05VVH2 -F 2Ax0,75 thermo contact circuit CYKY 3Cx1,5 single-phase motor supply CYKY 4Bx1,5 three-phase motor supply Motor Protection As standard, the permanent monitoring of internal motor temperature is applied in all motors. The limit temperature is monitored by thermal contacts (the TKthermo-contacts) situated in the motor winding. The thermo-contacts are miniature thermal tripping elements which after being connected to the protective contactor circuit protect the motor against overheating (damaging) due to phase failure, forced motor braking, current protection circuit breakdown or excessive temperature of transported air. The thermal protection by means of thermo-contacts is complex and reliable providing they are correctly connected. This type of protection is essential especially for speed controlled and frequently started motors and motors highly thermally loaded by hot transported air. Therefore, the fan motors cannot be protected by conventional overcurrent protection elements! The thermo-contact rated loading is 6A / 250V / 50 Hz (cos φ 0.6). Activation and Start-up The fan can be started after its mounting into the duct system for which it has been designed; respectively fully throttled by closing either the intake or discharge to avoid its overloading! The fan is loaded by increasing the air flow, i.e. by releasing the throttling. After starting the fan with three-phase motor, the right direction of the impeller rotation must be checked visually following the direction of the arrow on the fan. To do so, remove the rubber plug from the inspection opening in the fan cup (see fi g. #10). After starting the fan, the current must also be measured, and it must not exceed the maximum allowed current Imax. stated on the rating plate. If the measured values exceed the given current value, it is necessary to check the duct system regulation. The fans are equipped with thermo-contacts situated in the motor winding; they are connected to the TK terminals. If the motor gets too hot, the thermo-contact will open. The thermo-contact must be connected to the control or regulating system (e.g. control unit, TRN controller or STE relay) which is able to evaluate the failure, and protect the motor against unwanted thermal effects. The proper function of the controller must ensure that after getting cold and the thermo-contact closing, the motor cannot be spontaneously started. Before restarting the fan, it is necessary to check the duct system regulation, the electrical parameters of the motor and the entire wiring. If the fans are operated without connection to this protection, our warranty for the damaged motor will become void. Operation, Maintenance and Service During operation it is necessary to check proper functioning of the fan, its smooth running, to keep it and its surroundings clean, and to load the fan only within the range given by its output characteristics. If a failure occurs, make sure that the power supply is disconnected, and check the fan for foreign objects inside, and free rotation. If the fan does not run after it has been restarted, the following procedures must be followed depending on the protection system used: If the fan is protected by STE or STD relays: Turn the fan on/off using the buttons on the protecting relay. If the fan is protected by a TRN controller: Turn the fan on/off using the switch on the remote controls of the controller. If the fan is protected by the control unit: It is necessary to turn the unit on again. If the fan does not start: Check the wiring, and measure the motor winding impedance. If the motor is damaged, contact your supplier. Warning! When performing any maintenance or repairs, the device must always be disconnected from the power supply! To ensure voltage-free state, the device must be provided with a stand-alone and lockable switch (or with a control unit equipped with such a switch). 6

7 RO Fans Technical information Operating Conditions, Position The RO fans are designed for indoor and outdoor applications, and to transport air without solid, fi brous, sticky, aggressive, respectively explosive impurities. For outdoor applications, it is necessary to fi nish the fans with a protective coating (except rating plates). The transported air must be free of corrosive chemicals or chemicals aggressive to zinc, aluminium and/or plastics. Mechanical Installation The fan must be checked carefully before its installation, especially if it was stored for a longer time. In particular, it is necessary to check all parts and cable insulation for damage, and to see whether the rotary parts can rotate freely. It is recommended to install DV elastic connections in front of and behind the fan. It is advisable to always place the KFD or VFK air fi lters in front of the fan to protect the fan and duct against dirtying and dust fouling. If the fan is installed in such a way that persons or objects can come into contact with the impeller, the guard grid must be mounted. The fan must be suspended by separate suspensions so that no loading can be transferred to the elastic connections or connected duct. Anchoring to the ceiling with steel anchors and suspension using threaded rods (see fi g. #12), perforated galvanized strips (see fi g. #13) or ancillary construction is recommended. The RO fans can work in any position. When positioned under the ceiling, it is advisable to situate the fan with its service panel directed downwards to ease access to the motor terminal box. If transported air is oversaturated with moisture or if the risk of intensive and permanent steam condensation inside the fan exists (e.g. showers, kitchens, laundry plants, etc.), it is better to situate the fan's access panel upwards while leaving enough space for the service panel opening to ensure easy access to the motor terminal box. Figure 12 Anchoring to the ceiling Figure 13 Anchoring using galvanized strips Before installation, paste self-adhesive sealing onto the connecting fl ange face. To connect individual parts of the Vento system, use galvanized screws and nuts M8. It is necessary to ensure conductive connection of the fl ange using fan-washers placed on both sides, at least on one fl ange connection. To brace the fl anges with a side longer than 40 cm, it is advisable to connect them in the middle with another screw clamp which prevents fl ange bar gapping. After loosening the two wing screws, the hinged service panel on which the motor and impeller are fi xed can be easily opened. The motor and impeller must be periodically checked and cleaned. Especially if the fan is connected to the outlet from a kitchen or an exhaust hood, and the greasy dirt can be expected, the impeller and motor must be regularly cleaned with warm water and detergent. The Wiring The wiring can be performed only by a qualifi ed worker licensed in accordance with national regulations. The fans are equipped with an all-plastic terminal box fi xed with screws to the fan service panel. The terminal box is equipped with WAGO terminals; max. cross-section of connecting conductors 1.5 mm2 (see fi g. #14). Figure 14 All-plastic terminal box Terminal box Starting capacitor 7

8 Installation, Maintenance and Service The wiring connection to the terminals can be performed following the marking on the motor cables, the description of terminals or the label on the terminal box lid (see fi g. #15). The CYKY 3Cx1,5 cable is recommended to connect the fan motor to the supply. Figure 15 Wiring diagram PE N L1 PE U2 U1 Z Single-phase motor fan Figure 16 Hinged service panel Service panel Impeller Motor U1, U2 single-phase motor supply terminals1f 230V/50Hz PE protective conductor terminal Motor Protection As standard, the permanent and automatic monitoring of internal motor temperature is applied in all motors of RO fans. The limit temperature is monitored by thermal contacts (the TK-thermo-contacts) situated in the motor winding. The thermo-contacts are miniature thermal tripping elements which are connected in series with the supply circuit, and thus protect the motor against overloading due to excessive temperature of transported air, etc. RO Fans Activation and Start-up After starting the fan, the current must also be measured, and it must not exceed maximum allowed current Imax. stated on the rating plate. If the measured values exceed given the current value, it is necessary to check whether the rotary parts can rotate freely. The fans are equipped with thermo-contacts situated in the motor winding. If the motor gets too hot, the thermo-contact will automatically disconnect the power supply. After getting cold, the thermo-contact closes, and connects the power supply. The activated thermal protection mostly signals a failure. If this is the case, then it is necessary to check the electric parameters of the motor as well as the entire wiring. If the fans are operated without connection to this protection, our warranty for the damaged motor will become void. Operation, Maintenance and Service During operation, it is necessary to check proper functioning of the fan, its smooth running, to keep it and its surroundings clean, and to load the fan only within the range given by its output characteristics. If a failure occurs, make sure that the power supply is disconnected, and check the fan for foreign objects inside, free impeller rotation, respectively whether the motor is overheated. If the fan does not start: Check the wiring, and measure the motor winding impedance. If the motor is damaged, contact your supplier. Warning! When performing any maintenance or repairs, the device must always be disconnected from the power supply! To ensure voltage-free state, the device must be provided with a stand-alone and lockable switch (or with a control unit equipped with such a switch). 8

9 * RS Fans Technical information Operating Conditions, Position The RS fans are designed for indoor and outdoor applications, and to transport air without solid, fi brous, sticky, aggressive, respectively explosive impurities (an adequate surface fi nish is a condition for outdoor applications). The transported air must be free of corrosive chemicals or chemicals aggressive to zinc and/or aluminium. The RS fans can work only in the horizontal position (i.e. the impeller rotation axis is in the vertical position). Mechanical Installation The fan must be checked carefully before its installation, especially if it was stored for a longer time. In particular, it is necessary to check all parts and cable insulation for damage, and to see whether the rotary parts can rotate freely. The RS fans can work only in the horizontal position (i.e. the impeller rotation axis is in the vertical position). The same applies also for their transport. It is recommended to install the RS fan on a roof adaptor. A self-acting pressure damper connected to the fan intake prevents air backdraught. The RS fans and roof adaptors delivered in the standard version need to be fi nished with a protective coating after installation. The Wiring The wiring can be performed only by a qualifi ed worker licensed in accordance with national regulations. The fans are equipped with an all-plastic terminal box fi xed with screws to the fan supporting plate. The terminal box is equipped with WAGO terminals. The wiring connection to the terminals can be performed following the marking on the motor cables, the description of terminals or the label on the terminal box lid (see fi g. #17). The following cables are recommended to connect fan motors: HO5VVH2 - F 2Ax0,75 thermo-contact circuit CYKY 3Cx1,5 single-phase motor supply CYKY 4Bx1,5 three-phase motor supply The wiring cables are led from the terminal box through one of the supporting studs as far as to below the fan platform, and then through the roof adaptor into the ventilated space. The wiring diagram (see fi g. #17) with front-end elements (protective relays, controllers, control units). Figure 17 Wiring diagram TK TK TK TK L1 N PE Z2 Z1 U1 U2 PE single-phase fan motor TK TK L1 L2 L3 PE TK TK U1 V1 W1 PE three-phase fan motor TK thermo-contact terminals U1, U2 single-phase motor supply terminals 1f 230V/50Hz PE protective conductor terminal U1, V1, W1 three-phase motor supply terminals 3d 3x 400V/50Hz Motor Protection As standard, the permanent monitoring of internal motor temperature is applied in all motors. The limit temperature is monitored by thermal contacts (the TKthermo-contacts) situated in the motor winding. The thermo-contacts (TK) are miniature thermal tripping elements which after being connected to the protective contactor circuit protect the motor against overheating (damaging) due to phase failure, forced motor braking, current protection circuit breakdown or excessive temperature of transported air. The thermal protection by means of thermo-contacts is complex and reliable providing they are correctly connected. This type of protection is essential especially for speed controlled and frequently started motors and motors highly thermally loaded by hot transported air. The fan motors are equipped with the thermo-contacts in two versions: Serial Thermo-Contact (self-acting) The thermo-contact in the motor connected in series to the motor winding will disconnect the power supply if the winding temperature exceeds 130 ºC. After getting cold, the thermo-contact closes, and the fan will start. All RS 30 fans are equipped with serial thermo-contacts. Brought-Out Thermo-Contact (control) The fan equipped with a thermo-contact brought out into the terminal box (TK terminals) must be connected to the protective device. When the temperature exceeds critical values, the thermo-contact will disconnect the control circuit of the protective device which will further disconnect the motor power supply. All RS fans, except the RS 30 line, are equipped with brought-out thermo-contacts. The thermo-contact rated loading is 6A / 250V - 50 Hz (cos φ 0.6). Activation and Start-up After starting the fan with three-phase motor, the right direction of the impeller rotation must be checked following the direction of the arrow on the fan supporting plate. After starting the fan, the current must be measured, and it must not exceed maximum allowed current Imax. stated on the rating plate. If the measured values exceed the given current value, it is necessary to check the duct system regulation, and to check the direction of rotation. Safety guards and heads must not be removed if the fan is in operation. The fan must be installed in such a way that neither persons nor objects can come into contact with the impeller. The fans are equipped with thermo-contacts situated in the motor winding; they are connected to the TK terminals. If the motor gets too hot, the thermo-contact will disconnect the control circuit of the protective contactor, and after getting cold, the thermo-contact connects it again. The RS 30 line is equipped with a self-acting thermo-contact connected in series to the power supply. The wiring must be performed in accordance with the project and Installation manual. Before putting the fan into operation, a wiring inspection must be performed. If the fans are operated without connection to this protection, our warranty for the damaged motor will become void. * Instalation instructions for the new RF series of roof fans are available in separate document. 9

10 RS Fans Accessories, Operation, Maintenance and Service Fan Accessories Installation The NK or NDH roof adaptors make the installation of RS fans significantly easier. The roof adaptors can be used on almost any type of roof. The opening in the roof construction must not be larger then the adaptor platform and it should be of a precise square shape. The adaptor platform must be drilled and screwed to the roof construction. The contact surfaces of the roof adaptor platform and roof construction must be thoroughly sealed with sealing cement. The wiring cable can be led through the roof adaptor and through one of the fan supporting studs into the terminal box. Roof hydro-insulation should also be applied on the roof adaptor up to a height of 30 cm. The end of the roof hydro-insulation must be completed with sealing cement and fl ashing to prevent water penetration (see fi g. #18). Figure 18 Roof adaptor installed on a fl at roof air ventilation gap fl ooring boards thermal insulation extension base The roof adaptors need to be painted with a protective coating after installation. It is advisable to seal all screw joints on the fan with silicone cement. The roof adaptors for applications on sloping roofs can be delivered with their platforms adjusted to the roof sloping. Specify the roof sloping angle in your order (see fi g. #19). Figure 19 Roof adaptor installed on a sloping roof adapter thermal insulation tinsmith edging roof hydro-insulation wooden chock supporting balks concrete ceiling The roof adaptor platform is provided with four M8 riveted nuts so that standard roof adaptors (without sloping) can be connected to the air-handling duct. Figure 20 Duct connection to the roof adaptor washer bolt M8 x M8 roof adapter Connected piping Before installation, paste self-adhesive sealing onto the lower side of the fan platform. To connect the platform to the duct, use galvanized screws and nuts M8. It is necessary to ensure conductive connection of the fan platform using fan-washers placed on both sides at least on one connection, or use Cu conductor wiring. Operation, Maintenance and Service A regular check of the RS fan must be performed once a year. During operation, it is necessary to check proper functioning of the fan, its smooth running, to keep it and its surroundings clean. If a failure occurs, make sure that the power supply is disconnected, and check the fan for foreign objects inside, and free rotation. If the fan does not run after it has been restarted, the following procedures must be followed depending on the protection system used: If the fan is protected by STE or STD relays: Turn the fan on/off using the buttons on the protecting relay. If the fan is protected by a TRN controller: Turn the fan on/off using the switch on the remote controls of the controller. If the fan is protected by the control unit: Press the unblocking button on the control unit, and turn the unit on If the fan does not start: Check the wiring, and measure the motor winding impedance. If the motor is damaged, contact your supplier. plumb piashing roof hydroinsulation roof laths fl ooring boards beam Warning! When performing any maintenance or repairs, the device must always be disconnected from the power supply! To ensure voltage-free state, the device must be provided with a stand-alone and lockable switch (or with a control unit equipped with such a switch). 10

11 RPH Fans Technical Information Operating Conditions, Position The RPH fans are designed only for indoor environment free of humidity condensation. They can transport air without solid, fi brous, sticky, aggressive, respectively explosive impurities. The transported air must be free of corrosive chemicals or chemicals aggressive to zinc and/or aluminium. The RPH fans can work only in the horizontal position. When positioned under the ceiling, it is advisable to situate the fan with its cup directed downwards to ease access to the motor terminal box. The RPH fans must always be provided, both intake and discharge, with dilatation inserts and attenuators, respectively with noise insulated ducts. The RPH fan suspensions must always include attenuation and antivibration elements (e.g. silent blocks). Mechanical Installation The fan must be checked carefully before its installation, especially if it was stored for a longer time. In particular, it is necessary to check all parts and cable insulation for damages, and to see whether the rotary parts can rotate freely. It is recommended to insert the DV elastic connections in front of and behind the fan. It is advisable to always place the KFD or VFK air fi lters in front of the fan to protect the fan and duct against dirtying and dust fouling. If the fan is installed in such a way that persons or objects can come into contact with the impeller, the guard grid must be mounted. The fan must be suspended by separate suspensions so that no loading can be transferred to the elastic connections or connected duct. The suspensions must always include attenuation and anti-vibration elements (e.g. silent blocks). Anchoring to the ceiling using steel anchors and "Z" suspensions of suitable load capacity (e.g. ZZTP suspensions with integrated silent blocks of 80 kg load capacity) riveted to the fan casing (see fi g. #21) or ancillary construction is recommended. The prescribed air fl ow direction is marked on the fan casing by an arrow. The RPH fans can work only in the horizontal position. When positioned under the ceiling, it is advisable to situate the fan with its cup directed downwards to ease access to the motor terminal box. Before installation, paste self-adhesive sealing onto the connecting fl ange face. To connect individual parts of the Vento system, use galvanized screws and nuts M8 (M10 only for RPH and RPH ). It is necessary to ensure conductive connection of the fl ange using fan-washers placed on both sides at least on one fl ange connection. To brace the fl anges with a side longer than 40 cm, it is advisable to connect them in the middle with another screw clamp which prevents fl ange bar gapping. The Wiring The wiring can be performed only by a qualifi ed worker licensed in accordance with national regulations. The fans are equipped with WAGO terminals; max. cross-section of connecting conductors 1.5 mm2 The wiring connection to the terminals can be performed following the marking on the motor cables in the terminal box or the description of terminals (see fi g. #22). Figure 22 Wiring diagrams TK TK TK TK L1 N PE Z2 Z1 U1 U2 PE single-phase fan motor TK TK L1 L2 L3 PE TK TK U1 V1 W1 PE three-phase fan motor TK thermo-contact terminals U1, U2 single-phase motor supply terminals 1f 230V/50Hz PE protective conductor terminal U1, V1, W1 three-phase motor supply terminals 3d 3x 400V/50Hz Figure 21 "Z" suspensions Figure 23 Internal wiring arrangement The internal wiring arrangement of 3f fans is similar. 11

12 RPH Fans Installation The following cables are recommended to connect fan motors: HO5VVH2 F 2Ax0,75 thermo contact circuit CYKY 3Cx1,5 single-phase motor supply CYKY 4Bx1,5 three-phase motor supply Motor Protection As standard, the permanent monitoring of internal motor temperature is applied in all motors. The limit temperature is monitored by thermal contacts (the TKthermo-contacts) situated in the motor winding. The thermo-contacts are miniature thermal tripping elements which after being connected to the protective contactor circuit protect the motor against overheating (damaging) due to phase failure, forced motor braking, current protection circuit breakdown or excessive temperature of transported air. The thermal protection by means of thermo-contacts is complex and reliable providing they are correctly connected. This type of protection is essential especially for speed controlled and frequently started motors and motors highly thermally loaded by hot transported air. Therefore, the fan motors cannot be protected by conventional overcurrent protection elements! The thermo-contact rated loading is 6A / 250V / 50 Hz (cos φ 0.6). Activation and Start-up The fan can be started after its mounting into the duct system for which it has been designed; preferably fully throttled by closing either the intake or discharge to avoid its overloading! (Applicable for fans with nonworking area). The fan is loaded by increasing the air flow, i.e. by releasing the throttling. After starting the fan with three-phase motor, the right direction of the impeller rotation must be checked following the direction of the arrow on the fan. To do so, remove the rubber plug from the inspection opening in the fan cup. After starting the fan, the current must be measured, and it must not exceed the maximum allowed current Imax. stated on the rating plate. If the measured values exceed the given current value, it is necessary to check the duct system regulation. The fans are equipped with thermo-contacts situated in the motor winding; they are connected to the TK terminals. If the motor gets too hot, the thermo-contact will open. The thermo-contact must be connected to the control or regulating system (e.g. control unit, TRN controller or STE, STD relay) which is able to evaluate the failure, and protect the motor against unwanted thermal effects. The proper function of the controller must ensure that after getting cold and the thermo-contact closing, the motor cannot be spontaneously started. Before restarting (unblocking) the fan, it is necessary to check the duct system regulation, electrical parameters of the motor and the entire wiring. If the fans are operated without connection to this protection, our warranty for the damaged motor will become void. Operation, Maintenance and Service During operation, it is necessary to check proper functioning of the fan, its smooth running, to keep it and its surroundings clean, and to load the fan only within the range given by its output characteristics. If a failure occurs, make sure that the power supply is disconnected, and check the fan for foreign objects inside, and free rotation. If the fan does not run after it has been restarted, the following procedures must be followed depending on the protection system used: If the fan is protected by STE or STD relays: Turn the fan on/off using the buttons on the protecting relay. If the fan is protected by the TRN controller: Turn the fan on/off using the switch on the remote controls of the controller. If the fan is protected by the control unit: Press the unblocking button on the control unit (the horn symbol), and restart the unit. If the fan does not start: Check the wiring, and measure the motor winding impedance. If the motor is damaged, contact your supplier. Warning! When performing any maintenance or repairs, the device must always be disconnected from the power supply! To ensure voltage-free state, the device must be provided with a stand-alone and lockable switch (or with a control unit equipped with such a switch). The wiring diagrams with front-end elements (protective relays, controllers, control units) are included in the installation manual. 12

13 RP Ex, RQ Ex Fans Technical information Operating Conditions, Position RP and RQ Ex fans are designed for indoor and outdoor applications, and to transport air without solid, fibrous, sticky or aggressive impurities. The transported air must be free of corrosive chemicals or chemicals aggressive to zinc, copper and/or aluminium. The allowed temperature of the transported air ranges from -20 ºC up to +40 ºC. These fans are designed for use in Zone 1 in reference to the classification of explosion hazardous areas in accordance with the EN standard. Explosion-proof RP and RQ Ex fans, secure version "e", belong according to EN to Group II and are labelled with the II 2G Exe II TX marks. The fans themselves are labelled with the II 2G c IIB+H 2 TX marks proving their explosion- -proof design. The fans can work in any position. When positioned under the ceiling, it is advisable to situate the RP Ex fan with its cup directed downwards to ease access to the motor terminal box. However, if transported air is oversaturated with moisture or if the risk of intensive steam condensation inside the fan exists, it is better to situate the fan's cup upwards while leaving enough servicing space for the motor terminal box. The RQ Ex fans are mostly installed in the horizontal position of the motor shaft rotation (however, this is not a condition of use). The square sidewalls of the fan serve also as legs to fix the fan onto the base using anchor bolts. The fan can be positioned in four positions turned by 90º. Motor Protection As standard, the permanent monitoring of internal motor temperature is applied in all motors. The temperature inside the motor is read by temperature sensitive sensors (thermistors) situated in the motor winding. The thermistors must be connected to the trip relay which, after reaching a temperature of 130 ºC, disconnects the protective contactor circuit. This system protects the motor against overheating due to phase failure, forced motor braking, current protection circuit breakdown or excessive temperature of transported air. This thermal protection is complex and reliable providing it is correctly connected. It is forbidden to protect the motors by conventional overcurrent protection elements! Installation Installation, maintenance and service are the same as with RP and RQ fans. Thermistor Protection of Ex Fans The temperature inside the motors of all RP Ex and RQ Ex fans is permanently read by temperature sensitive sensors (PTC thermistors) situated in the motor winding. The thermistors must be connected to the trip relay which, after reaching a temperature of 130 ºC, irrevocably disconnects the coil control circuit of the STD or TRD protective elements. Operation, Maintenance and Service During operation, it is necessary to check proper functioning of the fan, its smooth running, to keep it and its surroundings clean, and to load the fan only within the range given by its output characteristics. If a failure occurs, make sure that the power supply is disconnected, and check the fan for foreign objects inside, and free rotation. If the fan does not run after it has been restarted, the following procedures must be followed depending on the protection system used: If the fan is protected by the STD relay. Turn the fan on/off using the buttons on the protecting relay. If the Ex fan is protected by the TRN controller and UR3R1011 relay, the following restart procedure is necessary: The restart can be performed only after the motor has cooled down. First, press the button RESET, unblock the thermistor relay, and then unblock the TRN controller selecting the STOP state on the remote ORe governor. If the fan is protected by the VCB control unit and UR3R1011 relay, the following restart procedure is necessary: The restart can be performed only after the motor has cooled down. First, press the button RESET, unblock the thermistor relay, and then unblock the failure on the LORZJ control module, refer to operation manual. Warning! When performing any maintenance or repairs, the device must always be disconnected from the power supply! To ensure voltage-free state, the device must be provided with a stand-alone and lockable switch (or with a control unit equipped with such a switch). 13

14 TRN Transformer Controllers 14 TRN Transformer Controllers Operating Conditions, Position These controllers are intended for indoor applications in a dry, dust and chemical- free environment. They are designed for normal environmental conditions in accordance with ČSN (IEC 364-3). Degree of protection: IP 20 Permissible ambient temperature: +5 C to +40 C Position: always vertical or horizontal. The controllers can be situated on a wall, air-handling duct or ancillary construction. They can be mounted on A and B combustibility grade materials in accordance with the ČSN EN and, ČSN standards. The installation must be performed considering the weight of the controller, easy wiring, service access, and free cooling openings. The controller casing is provided with ventilation openings, which must not be covered. Installation The installation and commissioning can be performed only by an authorized company licensed in accordance with valid regulations. The controller must be checked carefully before its installation, especially if it was stored for a longer time. In particular, it is necessary to check all parts and cable insulation for damage. It is advisable to place the TRN output controller close to the fan, e.g. in a machine room, in the ceiling, etc. The controller can be placed on a wall, air-handling duct or ancillary construction. With regard to its weight, the controller is installed in three steps. First, fi x the base with 4 screws ø 6 mm. Hang the controller supporting plate, including wiring, on the base, and secure it with a screw. Finally, fi x the controller cover. The installation must be performed considering the weight of the controller, easy wiring, barrier-free service access, and free cooling openings. As the controller contains sensitive electro-mechanical parts, take care and keep the controller interior clean. Especially, it is necessary to avoid the controller being contaminated with dirt from a construction site (dust, sand, plaster, etc). The remote control can be situated at any distance from the controller, and mounted on a wall at the operator's location. The Wiring The wiring can be performed only by a qualifi ed worker licensed in accordance with national regulations. Cables for the power supply, fan motors connection and control are led through plastic grommets, and connected to the WAGO terminals in the lower part of the controller casing. The wiring connection must be performed in accordance with the description inside the controller (fi g. #24, page #15). To make replacing the fuse easy, free access and the necessary handling space must be provided. Each fan must be connected to a separate controller. If one output stage for two fans (inlet, outlet) is needed, it is possible to control both controllers by one remote governor. For more detailed information, refer to the operating instructions of individual controllers. As standard, the TRN controllers are equipped with integrated fan motor protection. The TK terminals in the controller serve to interconnect the TK terminals of the fan motor thermo-contacts. If the fan motor is overheated due to overloading or emergency, the thermo-contacts will open and the controller will stop the fan. When the motor cools down, and the failure is removed, the fan can be restarted from the zero position on the remote governor. The TRN controllers enable remote (external) starting/stopping of the fan independently of the governor. This function can be controlled by connecting or disconnecting the circuit between the PT1 and PT2 terminals. This feature can be used to start the fan by an external switch (thermostat, rheostat, hydrostat, auxiliary contact, etc...). After connecting the controller, the current must be measured, and it must not exceed maximum allowed value in any output stage. The maximum current value is stated on the rating plate as a numerical part of the type code of the controller (e.g. TRN7D means I max. = 7A). If the current values are higher, check whether the controller is connected to the appropriate fan; the rated current of the fan should be lower or equal to I max. of the controller. If the measured current value still exceeds the maximum permissible value even though the connected fan complies with the above-mentioned criteria, immediately check the duct system regulation. The fan is probably operated in a so-called forbidden (non-working) area of the fan output characteristics. The proper current value can be reached by air fl ow throttling. If the current value does not drop, it is necessary to check the electrical parameters of the entire wiring. The installation must be performed in accordance with the project (resp. Installation Manual). Before putting the controller into operation, an inspection of the wiring must be performed. Blocking of Output Stages For each output stage which can be blocked (1, 2, 3) there serves one connection "jumper". A combination of their states assigns blocked output stages. Their settings are independent; however, in practice the lowest stages are blocked, usually dependently, as indicated in the following table: Table 1 - Blocking of output stages Blocking of output stages "Jumper" settings J1 J2 J3 No blocking ON ON ON stage 1 OFF ON ON stage 1 + stage 2 OFF OFF ON stage 1 + stage 2 +stage 3 OFF OFF OFF ON... means connected state, OFF... means disconnected state "Jumper" location, see fi gure #25, page # 15.

15 TRN Transformer Controllers TRN Transformer Controllers Wiring diagram Figure 24 Terminal diagram of TRN controllers 1x 230V+N+PE AC 50 Hz Single-phase Controller: TRN 2E (4E, 7E) 3x 400V+N+PE AC 50 Hz Three-phase Controller: TRN 2D (4D, 7D, 9D) 48: 0V/DC 49: +24V/DC, 80 ma U1, N, PE: output controlled voltage for 1f motor TK, TK: terminals of thermo-contacts U1, V1, W1, PE: 400V supply PT1, PT2: ext. switching terminals (e.g. space thermostat) L1, N, PE: 230V supply 1f U5, V5, W5: output controlled voltage for 3f motor Speed Speed 1 Speed 2 Speed 3 Speed 4 Speed 5 STOP All other speed options STOP/RESET START Contact dimensioning 24V/DC, 0,1A Figure 25 Jumpers' location Jumpers J1, J2, J3 15

16 16 TRRE, TRRD Transformer Controllers Operating Conditions, Position These controllers are intended for indoor applications in dry, dust and chemical free environments. They are designed for normal environmental conditions in accordance with ČSN (IEC 364-3). Degree of protection: IP 20 Permissible ambient temperature: +5 C to +40 C Position: always only vertical or horizontal The controllers can be situated on a wall, air-handling duct or ancillary construction; however, always only in the vertical or horizontal position. The installation must be performed considering the weight of the controller. They can be mounted on A and B combustibility grade materials in accordance with the ČSN EN standard. The controller casing is provided with ventilation openings which must not be covered. Permanent and easy access to the controller must be ensured. Installation The installation and commissioning can be performed only by an authorized company licensed in accordance with valid regulations. The controller must be checked carefully before its installation, especially if it was stored for a longer time. In particular, it is necessary to check all parts and cable insulation for damage. The controller can be placed on a wall, air-handling duct or ancillary construction only in the vertical or horizontal position. With regard to its weight, the controller is installed in three steps: First, fi x the base with 4 screws ø 6 mm. Hang the controller supporting plate, including wiring, on the base, and secure it with a screw. Finally, fi x the controller cover. The controller must be placed within reach of the operator. The installation must be performed considering the weight of the controller, easy wiring, free cooling openings and its degree of electrical protection. As the controller contains sensitive electro-mechanical parts, take care and keep the controller interior clean (avoid dust, sand, plaster, etc). The controllers enable mechanical blocking of output stages 0-3. The blocking serves for the minimum air fl ow setting, i.e. to limit low outputs or to block the "0" stage if the control unit is used. It can be simply carried out by bending the corresponding lamella on the rotary switch coulisse. The Wiring The wiring can be performed only by a qualifi ed worker licensed in accordance with national regulations. Cables for the power supply, fan motors connection and control are led through plastic grommets and connected to the WAGO terminals in the lower part of the controller casing. The TRRE and TRRD controllers are not equipped with an integrated fan motor protection. Therefore, external protection devices must be used (STE, STD relays or control unit). The connection must be carried out according to figure 26, page 16. After connecting the controller and starting the fan, the current must be measured, and it must not exceed the maximum allowed value in any output stage. The maximum current value is stated on the rating plate as a numerical part of the type code of the controller (e.g. TRN7D means I max. = 7A). TRRE, TRRD Output Controllers If the current values are higher, check whether the controller is connected to the appropriate fan; the rated current of the fan should be lower or equal to Imax. of the controller. If the measured current value still exceeds the maximum permissible value even though the connected fan complies with the above-mentioned criteria, immediately check the duct system regulation. The fan is probably being operated in a so-called forbidden (non-working) area of the fan output characteristics. The proper current value can be reached by the air fl ow throttling. If the current value does not drop even after adjusting the duct system regulation, it is necessary to check the electrical parameters of the entire wiring. Each fan should be connected to a separate controller. If this recommendation cannot be fulfi lled, max. two fans can be connected to one controller, and enough current margins must be kept, i.e. the minimum rating current of the controller must be 20% higher than the sum of the maximum currents of both fans. Example: The total max. current of two fans RP 60-35/31-6D is 2 x 1.86A = 3.72A, plus adding 20% margin the controller current is 4.46A. For this value, the fi rst higher controller TRRD 7 will be used. Figure 26 Terminal diagram of TRRE(D) controllers Figure 27 P Figure 28 Figure 29 1x 230V +N+PE AC 50 Hz Single-phase Controller TRRE K 3x 400V +N+PE AC 50 Hz Three-phase Controller TRRD The blocking of a selected output stage can be simply carried out by bending the corresponding lamella on the rotary switch coulisse K up, 90º aslant. Thus the arm of the rotary switch P is blocked from passing through the position of the given output stage. Stages 0 3 can be blocked by bending the corresponding lamellas on the rotary switch coulisse. One or the range of two, three or four successive positions of the rotary switch can be blocked. This fi gure shows blocking of the output stage. The rotary switch can be turned right or left so all stages except stage are available.

17 Installation, Service and Maintenance EO, EOS, EOSX Electric Heaters Installation The heater must be checked carefully before its installation, especially if it was stored for a longer time. It is necessary to check parts for damage, and in particular, whether the heating rods, thermal fuses, insulation of conductors, terminals, etc are in good condition. The heaters can operate in any position except the position with the wiring distribution box directed downwards. The heater must be installed so that the prescribed air fl ow direction through the heater will be retained. The prescribed air fl ow direction is marked on the terminal box by an arrow. The correct air fl ow direction can also be determined according to the position of the aluminium cooler, which must be situated in cold air fl ow (in front of the heating rods), (see fi g. # 30). There is no need for individual suspensions to install the electric heaters. They can be inserted into the duct line, but they must not be exposed to any strain or torsion caused by the connected duct line. The heaters must be situated at a safe distance from fl ammable or easily infl ammable materials. The location of the heater must allow free space for heater surface cooling. It is necessary to keep easy access to the heater, especially to its wiring distribution box. Before installation, paste up to +100 C heat resistant sealing onto the connecting fl ange facing the heater. Heaters with dimensions up to mm are connected to the air-handling duct by 20 mm wide bar fl anges and four M8 screws on each fl ange. Heaters with dimensions up to mm are connected to the airhandling duct by 30 mm wide bar fl anges and four M10 screws on each fl ange. To brace the fl anges with a side longer than 40 cm, it is advisable to connect them in the middle with another screw clamp which prevents fl ange bar gapping. The lid of the wiring distribution box of heaters up to 30 kw is fixed with four M4 screws, while the lid of the wiring distribution box of 45 kw heaters is fi xed with six M4 screws. It is necessary to ensure conductive connection of the lid using fan-washers placed on both sides (at least on one connection), or use Cu conductor wiring. The electric heater must be provided with automatic control of the output. REMAK units are recommended to supply, control and protect electric heaters. Wiring and Commissioning The installation of the heater must be performed in accordance with the project and catalogue (respectively Installation Manual). The installation can be performed only by an authorized company licensed in accordance with generally valid regulations. The wiring diagrams of terminals of electric heaters are attached on the following pages. The wiring must be checked before putting the device into operation. Proper functioning of protective and emergency thermostats connection must be checked before commissioning the electric heater. When the circuit of emergency thermostats is disconnected, the control unit must disconnect the power supply to the heater power circuit, and signal failure of the heater due to overheating. The EOSX heaters are controlled by voltage of 10-40V/DC from the control unit. When connecting the heater, it is necessary to observe the proper polarity the heater terminal Q14 (+). If the polarity is reversed, the heater will not heat. The control voltage of the EOSX heater is led through a limiting thermostat with a switching point of +45 C, which is situated on the cooler of the SSR switching relays. The heater is provided with two emergency thermostats adjusted to +80 C. The thermostats are connected to terminals E3 and GE. The Wiring The heater supply cables must be dimensioned in accordance with valid technical standards, and maximum current, cable bedding and length must also be taken into account. The cable sections are valid for CYKY cables, type of cable bedding: B, C, E in air at ambient temperature up to +30 C (ČSN , resp. IEC ). The cables are led through grommets into the wiring distribution box, which is an integral part of the heater. Inside the wiring distribution box, the cables are interconnected with inner wiring using screw-free clip terminals. The heating rods of all heaters are designed for 230V voltage. The heaters are provided with two-stage thermal protection with two stand-alone thermostats (for details, refer to the chapter "Thermal Protection"). Simpler and cheaper heaters in the EO product line, designed for less demanding conditions, are switched by the contactor directly in the control unit. EOS and EOSX heaters are switched by electronic non-contact switching relays SSR (Solid State Relay) which are characterized by long service life (indefi nite number of closures compared to contactors), low input (15 mw) to switch output rates in kw s, switching at zero voltage, abatable nuisance, without sparking, optically separated input and output (dielectric strength of 4 kv). 17

18 Installation, Service and Maintenance EO, EOS, EOSX Electric Heaters 18 Thermal Protection Generally, if the electric heaters are not properly protected and controlled, they can be dangerous. Aside from electrical protection, attention must also be paid to thermal protection. When creating the project layout, we recommend observing the following principles. The electric heater output must be automatically controlled. The operation of the heater must be blocked if the fan is out of operation for any reason, or the speed of the air flow is limited to below the accepted level. Either the air-handling device is switched off manually or automatically the heater must be switched off fi rst, and then with time delay suffi cient for heater cooling, the dampers can be closed and the fan switched off. An air fi lter must be placed at a suffi cient distance in front of the heater. Without using an air filter, there is a danger of the heating rods fouling and being damaged due to insuffi cient cooling. Suffi cient protection can be ensured by a KFD filter with a filter insert. Gradual fi lter fouling causes a reduction in the air fl ow rate. Therefore, it is necessary to monitor the filter condition via the differential pressure sensor, and change the fi lter insert in due time. The speed of the air fl ow in the electric heater should not fall below 1 2 meters per second. If the output of the fan is controlled by the TRN controller, it is possible to block the lower stages of the controller so that the speed of the air fl ow will not fall below the limit value. As a consequence of breakdown or failing to observe any of the above-mentioned recommendations, an emergency situation could occur due to overheating. Complex and system protection can be ensured by proper connection of the electric heater to the control unit. As standard, all heaters are equipped with stand-alone thermal limiters in accordance with the ČSN (IEC ) standards. The thermal limiters (thermostats) permanently prevent the limit temperature in the air-duct and in the wire distribution box from being exceeded. Basic (emergency) thermal protection Thermal protection of all electric heaters is ensured by two emergency thermostats connected into a serial loop. The thermostats are adjusted in production to +80 ºC; one reads the temperature among the heating rods while the other reads the temperature inside the wiring distribution box. If the thermo-contact in the loop trips (due to the heater overheating), the power supply of the heater must be disconnected. Extended thermal protection The thermal protection of EOS and EOSX electric heaters is extended by a protective SSR circuit. The temperature of the cooler of the SSR switching relays is read by the third protective thermostat adjusted to a switching point of +45 C. When this temperature is exceeded, the control signal to SSR is interrupted. After cooling down, the thermostat will automatically switch the control circuit, while the fans work without stopping all the time. Operation, Maintenance and Service The electric heater needs to be regularly checked at least at the beginning of each heating season. During operation, the heater must be checked for surface cleanness, surface temperature, and the connected cables for damage. It is necessary to inspect the proper switching functions of protective devices. If the air-handling device is stopped by the emergency system due to heater overheating, it is necessary to fi nd and remove the failure following the respective installation manual. Troubleshooting When you start the air-handling system for the fi rst time, you can face an undesirable situation. The following text includes common sources of problems and their removal: Permanently low output air temperature Too low temperature was adjusted on the control unit. Too low heater output for the given air fl ow and T. Wrong connection (polarity) of Q14, GC terminals. The limiting thermostat is defective. The electric heater's control circuit has been disconnected Permanently high output air temperature Too high EO, EOS heaters output for the given air fl ow and T. In regulation quality terms, in normal conditions higher temperature fl uctuation can be expected with EO and EOS electric heaters controlled by a control unit than with EOSX heaters or EOS heaters with a current valve. The output air temperature fluctuates Too high EO, EOS heaters output for the given air fl ow and T. In regulation quality terms, in normal conditions higher temperature fl uctuation can be expected with EO and EOS electric heaters controlled by a control unit than with EOSX heaters or EOS heaters with a current valve. Repeated activation of emergency temperature protection No air fl ow due to wrong installation. Failure of the emergency thermostat. The emergency circuit has been disconnected. Defective SSR switching relay. The above-mentioned failures which cause repeated activation of the temperature protection are serious, and need to be repaired immediately. Figure 30 Location of SSR cooler switches View in the air fl ow direction Cooler of SSR switches

19 EO, EOS, EOSX Electric Heaters Wiring Diagrams N neutral conductor U, V, W power supply terminals 3 x 400V/50Hz PE Protective conductor terminal Type Dimensional line N neutral conductor U, V, W power supply terminals 3 x 400V/50Hz PE Protective conductor terminal Type Dimensional line Output [kw] Output [kw] G3, E3 thermo-contacts max. 230V/1A El. heater EO G3, E3 thermo-contacts max. 230V/1A GC, Q14 Control signal 10-40V/ DC (+ Q14) El. heater EOS N neutral conductor U, V, W power supply terminals 3 x 400V/50Hz PE Protective conductor terminal Type Dimensional line N neutral conductor U, V, W power supply terminals 3 x 400V/50Hz PE Protective conductor terminal Type Dimensional line Output [kw] Output [kw] G3, E3 thermo-contacts max. 230V/1A El. heater EO G3, E3 thermo-contacts max. 230V/1A GC, Q14 Control signal 10-40V/ DC (+ Q14) El. heater EOS 19

20 EO, EOS, EOSX Electric Heaters Wiring Diagrams N neutral conductor U, V, W power supply terminals 3 x 400V/50Hz PE Protective conductor terminal Type Dimensional line N neutral conductor U, V, W power supply terminals 3 x 400V/50Hz PE Protective conductor terminal Type Dimensional line Output [kw] Output [kw] G3, E3 thermo-contacts max. 230V/1A GC, Q14 Control signal 10-40V/DC(+Q14) Q31 fi rst section switching (-Q31) Q32 second section switching (-Q32) El. heater EOSX G3, E3 thermo-contacts max. 230V/1A GC, Q14 Control signal 10-40V/DC(+Q14) Q31 fi rst section switching (-Q31) Q32 second section switching (-Q32) El. heater EOSX N neutral conductor U, V, W power supply terminals 3 x 400V/50Hz PE Protective conductor terminal Type Dimensional line N neutral conductor U, V, W power supply terminals 3 x 400V/50Hz PE Protective conductor terminal Type Dimensional line Output [kw] Output [kw] G3, E3 thermo-contacts max. 230V/1A GC, Q14 Control signal 10-40V/DC(+Q14) Q31 fi rst section switching (-Q31) Q32 second section switching (-Q32) El. heater EOSX G3, E3 thermo-contacts max. 230V/1A GC, Q14 Control signal 10-40V/DC(+Q14) Q31 fi rst section switching (-Q31) Q32 second section switching (-Q32) El. heater EOSX 20

21 Water heaters VO Technical Information Operating conditions The heated air must be without solid, fi brous, sticky, aggressive impurities, free of corrosive chemicals or chemicals aggressive to aluminium, copper and/or zinc. Maximum allowed operating parameters of heating water: Maximum allowed water temperature C Maximum allowed water pressure... 1,6 MPa Position and Location When projecting the layout of the heater location, we recommend observing the following principles: If water is used as the heating medium then the heater can be situated only in an indoor environment where the temperature is maintained above freezing point (this does not apply for heated air). Outdoor use is allowed only if antifreeze solution is used as the heating medium (mostly ethylene glycol solution). However, the temperature limit of the used actuating mechanism must be taken into account. Water heaters can work in any position in which airventing of the heater is possible. Free access to the heater must be ensured to enable control and service. An air fi lter must be installed in front of the heater to avoid its fouling. The counter-current connection of the heater is needed to achieve maximum output. The heater can be situated either in front of or behind the fan. However, if the heater is in front of the fan, the heater output must be controlled so that the air temperature will not exceed the maximum allowed value for the given fan. If the heater is situated behind the fan, we recommend inserting between the fan and the heater a spacer (e.g m long straight duct) to steady the air flow. Accessories are not included in the heater delivery and must be ordered separately. Air-Venting of the Heater To ensure proper operation of the heater, it is necessary to install reliable air-venting, the best being automatic. The TACO automatic air-venting valve with outer G1/2" thread is designed to be screwed directly into the heater header pipe. It must be installed on the very top of both header pipes. Thanks to its small dimensions, it is suitable when using the heater just below the ceiling. The heater can be vented either manually or automatically. With regard to the fact that the heater is mostly installed in places diffi cult to access, at height or on ceilings, automatic air-venting is a necessity. The TACO automatic air-venting valve with outer G1/2" thread (see fi g. #31) is designed to be screwed directly into the heater header pipe. It is installed on the very top of both header pipes. Maximum allowed operating parameters of heating water: Maximum operating water temperature C 1) Maximum operating water pressure...0,85 MPa Minimum operating water pressure kpa The valve must be installed in the vertical position or aslant with its head upwards, respectively horizontally; by no means downwards! Minimum water pressure in the system ensures that even if the pressure in the intake part of the mixing set drops, the air-venting valve will not take up air into the outlet heater header pipe. Warning! The following antifreeze solutions can be used as heating media: water and ethylene glycol (Antifrogen N) water and ethylene glycol (Antifrogen L) They enable the freezing temperature of the heating media to be dropped depending on the solution concentration. Other antifreeze agents can be used only upon presenting confi rmation of the manufacturer confi rming their compatibility with swelling materials (ring, inserts). Figure 31 TACO air-venting valve Thread Valve head Installation The heater must be checked carefully before its installation, especially if it was stored for a longer time. It is necessary to check parts for damage, and in particular whether the pipes, heater vanes and header pipes, insulation of conductors of the mixing set pump, etc are in good condition. If water is used as the heating medium, then the heater can be situated only in an indoor environment where the temperature is maintained above freezing point (this does not apply for heated air). Outdoor use is not recommended. It is allowed only if antifreeze solution is used as the heating medium (mostly ethylene glycol solution). However, the temperature limit of the used actuating mechanism must be taken into account. There is no need for individual suspensions to install the water heaters. The heater can be inserted into the duct line, but it must not be exposed to any strain or torsion caused by the connected duct line. Before installation, paste self-adhesive sealing onto the connecting fl ange face. To connect individual parts of the Vento system, use galvanized screws and nuts M8. It is necessary to ensure conductive connection of the fl ange using fan-washers placed on both sides at least on one fl ange connection, or use Cu conductor wiring. (1 V případě, že vodní ohřívač pracuje s vodou o teplotě +116 C, případně vyšší, nutno odvzdušnění zajistit plovákovým ventilem 21

22 Installation, Service and Maintenance To brace the fl anges with a side longer than 40 cm, it is advisable to connect them in the middle with another screw clamp which prevents fl ange bar gapping. Water heaters can work in any position in which air venting of the heater is possible. The most common heater positions are shown in fi gure #34. Positions A, B and C show the most suitable places for the TACO air-venting valve mounting (marked with arrows). Position D shows non-permissible installation of the heater which does not allow air venting. The TACO air-venting valves must be installed as shown in fi gure #32, i.e. vertically (upright) with their heads up view A, or horizontally view B, by no means downwards or slanted with their heads down C, D. The TACO air-venting valves must be mounted onto the highest point of the inlet/outlet header pipe (see fi g. #34). The openings in the header pipes have G1/2" inner thread and they were closed with plugs in the plant. Figure 32 TACO valve positions A B C D Water heaters VO Do not use excessive force, otherwise the pipes situated between the header pipes and sidewall of the heater could be damaged! An air filter must always be placed in front of the heater to avoid heater fouling. The heater can be situated either in front of or behind the fan. However, if the heater is in front of the fan, the heater output must be controlled so that the air temperature will not exceed the maximum allowed value for the given fan. If the heater is situated behind the fan, we recommend inserting a m long straight duct between the fan and the heater to calm the air fl ow down. The counter-current connection of the heater is needed to achieve maximum output (see fi g. #35). The concurrent connection provides lower output, but it is more frost resistant. The sophisticated design of the heaters enables you to turn on one heater arbitrarily, and you will always be able to arrange counter-current connection and to install the valves and thermal sensor in the right place. If the heater is covered by a ceiling, it is necessary to ensure access to the entire heater to enable checking and maintenance, especially of air-venting valves. Figure A 34 Heater positions The casing of the antifreeze protection NS 130 sensor can be mounted on the bottom side of the header pipe. To allow faster air venting while fi lling the system with water, loosen the knurled screw on the TACO valve by one or two turns. After finishing the fi lling of the system, tighten the knurled screw fi rmly, and the valve will then work automatically. During the fi rst air venting, a couple of water drops can leak through the air-venting valve. This will not happen again during normal operating conditions. When cleaning the TACO valve inside, it is necessary to replace the swelling parts (rings and inserts). The TACO valve is equipped with a back valve so there is no need to drain the heater. When connecting the mixing set hoses, thermal sensor NS 130 casing, or air-venting valve, be careful. A C ç ç ç ç Figure 35 Heater connection B D ç ç Figure 33 TACO valve installation TACO valves Outlet header pipe To Mixing set water outlet air inlet A water inlet water outlet counter-current connection water inlet B water inlet concurrent connection Inlet header pipe Pouzdro NS 130R Plug in the header pipe Cable to the NS 130R air outlet water outlet 22

23 SUMX Mixing Sets Technical Information Application of Mixing Sets SUMX mixing sets ensure continuous output control (proportional control using an analogue voltage signal of 0-10 V) and protection of the water heater. Output control is ensured by a change in the water output temperature at constant water discharge. A mixing set connected to the control unit and antifreeze protection system components can effectively protect the heater against freezing followed by its destruction. The below- -mentioned information can also be suitably used for integration of the mixing sets into a cooling system equipped with a water heat exchanger. Operating Conditions The water running through the mixing set must not contain impurities, solids or chemicals aggressive to copper, brass, stainless steel, zinc, plastics, rubber or cast iron. The heating system inlet branch must always be equipped with a sludge and cleaning fi lter. The mixing set must not be operated without this fi lter. Maximum allowed operating parameters of heating water: Maximum allowed water temperature C Max water pressure for SUMX ,8 MPa Max water pressure for SUMX ,3 MPa Maximum water pressure for SUMX ,6 MPa For installations using hot water up to 130 C, it is possible to use the so-called inverted (reverse) mixing set confi guration with a pump situated in the return water branch to ensure the required water temperature of 110 C in the heater outlet. The designation of the inverted mixing set is SUMX..i. Sealing of a corresponding quality must be used for the installation. It is advisable to consult the manufacturer. If water is used as the heating medium, the mixing set can only be situated in an indoor environment where the temperature never falls below freezing point. Outdoor installation is acceptable only if glycol antifreeze solution is used as the heating medium. Salt brine solutions are not recommended, see the chapter "Water Heaters". In applications in which it is necessary to avoid primary circuit water cooling or in applications in which it is necessary to avoid interference from the primary and secondary circuit pumps (undesirable heating water fl ow direction through the heater), it is possible to equip the primary circuit with a bypass (respectively with a thermo-hydraulic separator). The bypass should be situated as close as possible to the mixing set connection point. The heating water bypassing increases the return water temperature therefore, the bypass (thermo-hydraulic separator) must not be used in association with modern condensing boilers. The same applies if the heating water supplier does not allow the cooled water to be returned to the system. As the mixing set pump overcomes only the secondary circuit (the heater circuit) pressure losses, the primary circuit pump must be designed to cover all pressure losses up to the mixing set at the nominal water discharge which has been determined by the water heater design. The primary circuit pump must not affect the mixing set pump, i.e. the mixing set must not be loaded by the pressure from the primary circuit. It is not advisable to include other consumers in the heater's circuit. Further, it is necessary to equip the primary circuit inlet and outlet branch with ball closing valves and the inlet branch with a sludge and cleaning fi lter (which should also be separated by a closing valve). The mixing set must not be operated without a sludge and cleaning filter. Components of the primary circuit are not the subject of the delivery from REMAK a.s. Position and Location When projecting the layout of the mixing set location, we recommend observing the following principles: The mixing set must be mounted so that the shaft of the circular pump motor will always be in the horizontal position! The mixing set must be situated so that air-venting will be possible. If the mixing set is covered by a ceiling, it is necessary to ensure access to the entire mixing set to enable maintenance. The mixing set is connected to the heater via corrosion-proof hoses while the fl ange assembly should be mounted using standard heat-engineering techniques as close as possible to the heater. It is advisable to minimize the length of the hoses so that the control response will not be unnecessarily delayed. The mixing set is mounted using an integrated holder, respectively, tube clamps can be used, if necessary. The weight of the mixing set must never be transferred onto the heat exchanger. The fl ange-connected mixing sets are delivered disassembled. The connecting hoses are not included in the delivery. Materials Common heat-engineering materials and components are used to manufacture the mixing set. The mixing sets are made of brass, stainless steel, respectively, cast iron and in smaller scale, of galvanized steel and steel. The sealing components are made of rubber or plastic. Table 1 Mixing Set Types 23

24 A SUMX Mixing Sets Technical Information Dimensional Range and Design The mixing sets are delivered in 12 output types. Eight of them are equipped with screw couplings including connecting hoses, and four of them are equipped with fl ange connections without connecting hoses. The fl ange-connected mixing sets are delivered unassembled. The connecting hoses are not included in the delivery. Mixing Set Type The rate of fl ow and pressure of the heating, respectively, cooling medium in the mixing set is given by the size of the pump and three-way mixing valve with Kv value from 1.0 to 90 according to table # 1. The mixing set type selection and allocation to the heater is performed automatically by the AeroCAD design software. Figure 36 Connecting scheme of the heater and mixing set in a heating system a) Standard connection (mixing) Secondary circuit (heater) Primary circuit (boiler) (Example of connection) + VO heater SUMX Mixing Set B A Water outlet Water inlet Closing ball valves Optional elements of the bypass (the thermohydraulic splitter) Sludge and cleaning fi lter Boiler circuit pump SUMX Mixing Set Components: 1 Corrosion-proof connecting hoses (connecting pipes) 2 Hot water circulating pump 3 Three-way regulating and mixing valve 4 Mixing valve actuator Water distrubutor Water Header b) Inverted connection (separation) Boiler Secondary circuit (heater) Primary circuit (boiler) (Example of connection) + VO Ohřívač heatervo SUMX Mixing Set B Water outlet Water inlet Closing ball valves Optional elements of the bypass (the thermohydraulic splitter) Sludge and cleaning fi lter Boiler circuit pump SUMX Mixing Set Components: 1 Corrosion-proof connecting hoses (connecting pipes) 2 Hot water circulating pump 3 Three-way regulating and mixing valve 4 Mixing valve actuator Water distrubutor Water Header Boiler 24

25 SUMX Mixing Sets Technical Information Dimensions and Table 2 pump parameters Table 3 actuator parameters Performance The basic specifi cations can be found in pictures #3a to #4b and in table #4. The types are listed in table #1. The pump and actuator specifi cations and electrical parameters are included in table #2 and #3. Mixing. Set Designation The type designation of mixing sets in projects and orders is defi ned by the key in figure # 37. Table 4 dimensions, weight The project must also include the pump speed, which is set during the course of installation. The speed of the pump is indicated in parenthesis behind the type code of the mixing set. Figure 37 Type designation SUMX 2,5 (3) (i) Pump speed 1 / 2 / 3 Inverted connection Valve Kv 1 to 90 Figure 38a Basic layout of mixing sets Type and Design SUMX * ± 20 mm Figure 38b Basic layout of mixing sets B Figure 39a Basic layout of mixing sets Figure 39b Basic layout of mixing sets A A Connecting hose, Circulation pump, Three-way regulating valve, Valve actuator, Integrated holder B Connecting fi ttings, Circulation pump, Three- -way regulating valve Valve actuator, T-Piece Connecting fi tting is only used with mixing set sizes 28 and

26 Installation, Service and Maintenance Heater Output Control Pump ensures the constant water fl ow (circulation) through the water heater. Three-way mixing valve controlled by actuator controls the heater's output by mixing the return water from the heater and heating water from the boiler. If the control system requires full output of the heater, the water will fl ow in the so-called big circuit, i.e. from the boiler through the heating water distributor, sludge and cleaning fi lter, service and closing valve, SUMX intake, three-way mixing valve (only A direction), pump, water heater, SUMX water outlet, service and closing valve in to the heating water header. If full output of the is not required, three-way valve will start letting through some quantity of the water from the B direction, and thus decreasing the water temperature flowing through the heater. If no heating output is required, the water will only circulate within the heater circuit, i.e. three-way mixing valve will only let the water through in the B direction. The same applies for the inverted connection (distribution function of the three-way valve). Installation SUMX 1-25 mixing sets are connected directly to the heater via corrosion-proof hoses. If needed, the hoses can be cut to the desired length before installation. The mixing set must not be exposed to any strain or torsion caused by the connected pipe line. Figure 40 Installation using suspension rods The mixing sets can be mounted on separate suspensions using an integrated holder, or using clamps (see fi gure # 40). Figure 41 Exploded view of the mixing set SUMX Mixing Sets If the mixing set is covered by a ceiling, it is necessary to ensure access to the entire mixing set to Figure 42 enable electric cable connections, checking and mainte- View from below nance. SUMX fl ange-connected mixing sets can be connected to heat exchangers using standard heating engineering procedures; among others, it is necessary to ensure adaptation to threaded connections of the heat exchangers - refer to the heat exchanger technical details. It is advisable to use clamps to connect the fl ange-connected mixing sets to the suspensions or supporting brackets. The mixing set must be installed in such a way that the air in the piping will be able to run to the air-venting valves of the heater or boiler piping. Especially the connecting corrosion-proof hoses must be shaped after installation so as not to create an air trap. The mixing set must be positioned so that the shaft of the circular pump will always be in the horizontal position! The circular pump must be vented after the system has been fi lled with water in accordance with the manufacturer's instructions. The speed of the circular pump is indicated in the project after the type designation of the mixing set. For example, the mixing set SUM 6,3 (3) is equipped with the pump UPS which is set to speed 3, the number in parentheses (3). The speed of the pump can be adjusted by the plastic wheel on the pump during installation (see fi gure # 42). When connecting the mixing set, it is necessary to check the correctness of the adjustment of the three- -way valve and actuator. One way of the three-way valve, to which the bevelled spot on the valve shaft points, is always closed (fi gure # 44 shows the three-way valve's function). standard reversed set-up (1) Valve, (2) Pump, (3) T-piece, (4) making-up piece, (5) Sealing, (6) Sealing, (7) Washer, (8) Nut, (9) Screw, (10) Actuator, (11) Pin, (12) Fixing screw, (13) Adapter 26

27 SUMX Mixing Sets Installation, Service and Maintenance The mixing sets are delivered unassembled, the mixing set must be assembled following fi gure # 41. If the actuator turns incorrectly, change the direction of rotation by just turning switch S1 to the other position. The switch is accessible after removing the actuator's cover, see fi g. # 46. Figure 45 Mixing set connection VO NS120 Wiring The wiring can be performed only by a qualifi ed worker licensed in accordance with national regulations. The pump must be connected via the terminal box in accordance with the manual. The actuator is equipped with a cable which must be connected in a wiring box (not included in the delivery). The mixing set pump and actuator are supplied and controlled by the control unit. NS120 NS 100 NS 130R SUMX control unit Figure 43 Mixing set wiring diagram 230 V, 50Hz (CYKY 3C x 1,5) Pump connection Actuator connection 24 V ~, 0 10 V= (CYSY 3B x 0,5) 24 V = (JYTY 2 x 0,5) Pump Actuator HTYD (HTY) Figure 46 - Switching the actuator turning direction 1 x 230V + PE + N PE protective conductor terminal N Neutral conductor L Phase conductor 1...grounding conductor ( ) V AC / DC (+ ~) 3...control signal (Y) 5...measuring voltage For the mixing set wiring diagram, refer to fi gure # 8. The principle diagram of the mixing set connection to the control unit is shown in fi gure # 43. After connecting the mixing set, it is necessary to check the correctness of the actuator function depending on the control signal (heating no heating). After turning the pump on, it is necessary to measure the feed current, which must not exceed the allowed current I max. stated on the pump rating plate. Figure 44 Three-way valve function Actuator turning direction 0% heating 50% heating 100% heating From the bypass Standard connection (mixing) From the heat exchanger From the boiler Inverted connection (separation) To the heat exchanger To the boiler Valve gate Bevelled spot on the valve shaft To the bypass 27

28 SUMX Mixing Sets Installation, Service and Maintenance Operation, Maintenance and Service The mixing set requires regular maintenance at least at the beginning and end of the heating season. During operation, it is necessary to check the system for proper air venting and water leakage. It is necessary to supervise proper operation of the pump and actuator, and keep the filters in front of the mixing set clean. If the air-handling system is stopped due to the action of the antifreeze protection, the reason must be found and removed, refer to the chapter "Troubleshooting". All important system protection functions, including antifreeze protection of the mixing sets and heaters, must be permanently controlled by the control unit. Attention! During the winter season, the control unit must not be disconnected from the power supply for too long! Power supply failure during air-handling system operation is especially dangerous! Troubleshooting When activating the air-handling system, you can face some undesirable situations. The following text includes the most common problems and their removal: Permanently low output air temperature - Low hot water fl ow or pressure in the boiler piping - Low water temperature in the boiler piping - Low air temperature adjusted on the control unit - Low speed of the pump in the SUMX mixing set - Clogged screen in the SUMX mixing set - Wrong adjustment of the three-way valve and actuator - Aerated pump (resp. whole system) - Wrong design of the VO and SUMX assembly Permanently high output air temperature - Too high water fl ow and pressure in the boiler piping - Too high air temperature adjusted on the control unit - Wrong adjustment of the three-way valve and actuator - Wrong design of the VO and SUMX assembly The output air temperature fluctuates - Too high water fl ow and pressure in the boiler - Wrong adjustment of the three-way valve and actuator - Wrong design of the VO and SUMX assembly Repeated activation of an antifreeze protection - Low hot water fl ow or pressure in the boiler piping - Low water temperature in the boiler piping - Low air temperature adjusted on the control unit - Low speed of the pump in the SUMX mixing set - Clogged screen of the SUMX mixing set - Wrong adjustment of the three-way valve and actuator - Aerated pump (resp. whole system) - Wrong design of the VO and SUMX assembly Repeated activation of the antifreeze protection can also be caused by too high temperature amplitudes. The reasons are listed in the paragraph above. If the output water temperature is permanently above +30 C, the problem can be caused by failure of the control system or sensor. 28

29 CHV Water Coolers Technical information Operating Conditions CThe cooled air must be without solid, fi brous, sticky, aggressive impurities, and free of corrosive chemicals or chemicals aggressive to aluminium, copper and zinc. Maximum allowed operating parameters of cooling water: Maximum allowed water pressure MPa Position and Location When projecting the layout of the cooler location in the air-handling system, we recommend observing the following principles: If water is used as the cooling medium, then the cooler can be situated only in an indoor environment where the temperature is maintained above freezing point (the main condition is to maintain the temperature of transported air). Outdoor use is allowed only if antifreeze solution is used as the cooling medium (mostly ethylene glycol solution). However, the temperature limit of the used actuating mechanism must be taken into account. Water coolers can work only in the horizontal position in which condensate draining and air venting of the cooler is possible. Access to the cooler must be ensured to enable checking and service. An air fi lter must be installed in front of the cooler to avoid its fouling (providing it is not already installed in front of the heater). The counter-current connection of the cooler is needed to achieve maximum output. The cooler can be situated either in front of or behind the fan. If the cooler is situated behind the fan, we recommend inserting between the fan and the cooler a spacer (e.g m long straight duct) to steady the air flow. Figure 43 Condensate draining H... Siphon height K... Siphon drain height P... Total pressure of the fan Condensate Draining The cooler is equipped with a pan to collect condensate. The pan is finished with an outlet to connect the condensate draining kit. Condensate draining kits are delivered as optional accessories. The siphon height depends on the total pressure of the fan, and ensures its proper functioning. The siphon must be designed depending on the fan pressure (see fi g #43). Installation The cooler must be checked carefully before its installation, especially if it was stored for a longer time. It is necessary to check parts for damage, and in particular whether the pipes, cooler vanes and header pipes, insulation of conductors of the mixing set pump and actuator are in good condition. If water is used as the cooling medium, then the cooler can be situated only in an indoor environment where the temperature is maintained above freezing point. Outdoor use is not recommended. It is allowed only if antifreeze solution is used as the cooling medium (mostly ethylene glycol solution concentrated depending on the temperature). However, the temperature limit of the used actuating mechanism of the mixing set must be taken into account. There is no need for individual suspensions to install the water coolers. The cooler can be inserted into the duct line, it must not be exposed to any strain or torsion caused by the connected duct line. Before installation, paste self-adhesive sealing onto the connecting fl ange face. To connect individual parts of the Vento system, use galvanized screws and nuts M8. It is necessary to ensure conductive connection of the fl ange using fan-washers placed on both sides at least on one fl ange connection, or use Cu conductor wiring. Water coolers can work only in the horizontal position, in which condensate draining and air venting of the cooler are possible. To allow faster air venting while fi lling the system with water, remove the upper cover of the cooler, and loosen the knurled screw on the TACO valve by one or two turns. After fi nishing the fi lling of the system, tighten the knurled screw fi rmly, and the valve will then work automatically. During the fi rst air venting, a couple of water drops can leak through the air-venting valve. This will not happen again during normal operating conditions. When cleaning the TACO valve inside, it is necessary to replace the swelling parts (rings and inserts). The TACO valve is equipped with a back valve so there is no need to drain water from the cooler. Warning: The following antifreeze solutions can be used as heating media: - water and ethylene glycol (Antifrogen N) - water and ethylene glycol (Antifrogen L) When connecting the mixing set hoses or air-venting valve, be careful. Do not use excessive force, otherwise the pipes situated between the header pipes and the sidewall of the cooler could be damaged Installation, Service and Maintenance The counter-current connection of the cooler is needed to achieve maximum output. An air fi lter must be installed in front of the cooler to protect it from fouling. If covered by a ceiling, it is necessary to ensure access to the entire cooler to enable checking and maintenance; especially air-venting valves need regular checking. 29

30 CHF Direct Coolers Technical information Before operating the unit or after being out of operation longer, it is necessary to fi ll the siphon via the plastic plug with water. The unit can also be equipped with a siphon with a disconnecting trap and a ball valve (only pressured sections). This type of siphon need not be fi lled with water before putting it into operation. Operating Conditions The cooled air must be without solid, fi brous, sticky, aggressive impurities, and free of corrosive chemicals or chemicals aggressive to aluminium, copper and zinc. The cooler evaporator is fi lled with protective gas which is discharged after the evaporator is connected to the cooling circuit. The following operating coolants can be used: R123, R134a, R152a, R404a, R407c, R410a, R507, R12, and R22. Position and Location When projecting the layout of the cooler location in the air-handling system, we recommend observing the following principles: Direct coolers can work only in a position in which condensate draining is possible. Access to the cooler must be ensured to enable checking and service. An air filter must be installed in front of the cooler to avoid its fouling (providing it is not already installed in front of the heater). The counter-current connection of the direct cooler is needed to achieve maximum output. The cooler can be situated either in front of or behind the fan. If the cooler is situated behind the fan, we recommend inserting between the fan and the evaporator a spacer (e.g m long straight duct) to steady the air fl ow. Installation, Service and Maintenance Installation, servicing and maintenance can be performed only by a specialized company licensed in accordance with valid regulations and possessing the appropriate tools. There is no need for individual suspensions to install the CHF direct coolers. The cooler can be inserted into the duct line, but it must not be exposed to any strain or torsion caused by the connected duct line. Before installation, paste self-adhesive sealing onto the connecting fl ange face. To connect individual parts of the Vento system, use galvanized screws and nuts M8. It is necessary to ensure conductive connection of the flange using fan-washers placed on both sides at least on one fl ange connection, or use Cu conductor wiring. Figure 44 Condensate draining H... Siphon height K... Siphon drain height P... Total pressure of the fan 30

31 HRV Plate Heat Exchangers Technical information Operating Conditions and Position Inlet and outlet air must be without solid, fi brous, sticky, and aggressive impurities. The heat exchanger is designed to be installed into the air-handling system, into a parallel, perpendicular or 45º aslant air inlet/outlet duct line, or their various combinations. The disposition variability of the heat exchanger is provided by connecting elbows OBL.../45. The number of these elbows must be specifi ed in the project, depending on the intended disposition. The SKX mixing section can be connected directly to the heat exchanger via elbows for the parallel air outlet. The HRV heat exchanger even without elbows has the standard connecting dimensions of the Vento System. The HRV heat exchanger can be operated either in the horizontal or vertical position. However, condensate draining from the outlet air duct behind the heat exchanger must be ensured. When planning the air-handling system, it is necessary to consider requirements for the servicing space to enable the replacement of heat-exchange inserts Installation Installation of HRV heat exchangers is similar to other Vento components. The fl ange dimensions are compatible with Vento components. The casing of the HRV heat exchanger is provided with holes in its corners. These holes can be used to suspend the heat exchanger on threaded rods M8. Before installation, paste self-adhesive sealing onto the connecting fl ange face. It is necessary to ensure conductive connection of the flange using fan-washers placed on both sides at least on one fl ange connection. The condensate is created on individual vanes (heat exchange surfaces); therefore, the heat-exchange insert is always situated inside the heat exchanger casing with its side marked with the VRCH (TOP) label up. This along with the shape of the vane surfaces minimizes the possibility of accumulation of condensate on individual layers, and thus continuous draining of condensate drops from the vane surfaces is ensured. As the inlet and outlet air line branches intersect within the heat exchanger, the actual air fl ow cross-section is approx. half of its entire cross-section, and the air fl ow speed is doubled. Due to the actual air fl ow speed, condensate drops can be carried from the vanes down the air duct. In installations where this can happen, it is necessary to slope the duct behind the heat exchanger down, solder the joints, and provide the lowest duct point with a condensate draining outlet. The distance the condensate drops fall extends with increasing air fl ow speed. Depending on the air flow speed, this distance can be 1-3 m behind the heat exchanger. The condensate draining PVC outlet is delivered with the heat exchanger. It can be connected to the lowest point of the heat exchanger lid, which serves as a pan, to drain the condensate from the heat exchanger (if the heat exchanger is suspended under the ceiling, the lid downwards), see fi g. #45. If the HRV heat exchanger is installed on the fl oor with its lid up, the condensate draining outlet is installed only in the following air duct. Therefore, all condensate runs out from the heat exchanger into the duct. Recommendation: Air fi lters must be installed in front of the cold and hot air inlets to avoid fouling of the heat-exchange surfaces, successive reduction of the heat exchange effectiveness, and increasing pressure losses. To brace the fl anges with a side longer than 40 cm, it is advisable to connect them in the middle with another screw clamp which prevents fl ange bar gapping. Operation and Maintenance HRV heat exchangers, when used in accordance with the chapter Operating Conditions and Position, do not require special maintenance. Checking is usually performed when changing the winter assembly for the summer one, and vice-versa. To avoid condensation problems, it is necessary to keep the condensate drainage free. The replacement of the block shaped heat-exchange insert (resp. summer assembly) can be performed after removing the four wing screws from the bottom lid of the heat exchanger. The block is secured inside the heat exchanger by movable locking pieces. After loosening the securing screws, the locking pieces can be shifted aside (see fi g. #46) and the heat exchange insert can be removed from the casing. If the heat exchanger is suspended, it will be necessary to push (lift) the heat-exchange insert to release the locking pieces. The fouling can be carefully removed from the vanes of the heat-exchange insert by washing it out with detergent solution. Figure 45 PVC outlet Figure 46 Securing screws unlock lock Condensate outlet 31

32 Accessories KFD Bag Filter Cassette Operating Conditions and Position The KFD bag fi lter cassette should be installed in the air-handling duct at the beginning of the assembly (always in front of the exchangers, heat exchanger, and fan). The horizontal or vertical (the air fl ow direction downright) positions are recommended. The fi lters are designed for indoor use. When installed outside, they must be protected against water by a cover. Transported air must be free of corrosive substances or chemicals aggressive to zinc and rubber. Acceptable temperature of transported air can range from -30ºC to +70ºC. Installation, Maintenance and Service The KFD bag fi lter cassettes must be installed in the airhandling duct so that the air-fl ow direction through the fi lter will follow the arrow on the casing. Before installation, paste self-adhesive sealing onto the connecting fl ange face. To connect the filter fl anges, use galvanized screws and nuts M8 (M10 only for KFD ). It is necessary to ensure conductive connection of the fl ange using fan-washers placed on both sides at least on one flange connection. To brace the fl anges with a side longer than 40 cm, it is advisable to connect them in the middle with another screw clamp which prevents fl ange bar gapping. The removable inspection panel must be easily accessible. If installed into a ceiling, space for the inspection panel opening and fi lter replacing must be taken into account. Service The filters require regular inspection for fouling and replacement, if necessary. Inspection and fi lter replacement can be performed after loosening the wing screws and removing the service panel from the cassette casing. The fi lter can be removed in the following way: First push its frame back (in the air flow direction), and then pull it from the guiding rails. Place the new fi lter following the reverse way (see fi g. #47). VKF Insert Air Filter Cassette Operating Conditions and Position The VKF insert air fi lter cassette should be installed in the air-handling duct at the beginning of the assembly (always in front of the exchangers, heat exchanger, and fan). They can work in any position. The VKF filters are designed for indoor use. When installed outside, they must be protected against water by a cover. Transported air must be free of corrosive substances or chemicals aggressive to zinc and rubber. Acceptable temperature of transported air can range from -30ºC to +70ºC. Installation The cassettes must be installed in the air-handling duct so that the air-flow direction through the fi lter will follow the arrow on the casing. Before installation, paste selfadhesive sealing onto the connecting fl ange face. To connect the fi lter fl anges, use galvanized screws and nuts M8 (M10 only for VKF ). It is necessary to ensure conductive connection of the fl ange using fanwashers placed on both sides at least on one fl ange connection. To brace the fl anges with a side longer than 40 cm, it is advisable to connect them in the middle with another screw clamp which prevents fl ange bar gapping. The removable inspection panel must be easily accessible. If installed into a ceiling, space for the inspection panel opening and fi lter insert replacing must be taken into account. Service The fi lter inserts require regular inspection for fouling and replacement of the fi ltration textile, if necessary. Inspection and fi lter insert replacement can be performed after loosening the wing screws and removing the service panel from the cassette casing. The fi lter can be removed by pulling its frame from the guiding rails. Place the new fi lter following the reverse way (see fi g. #48). Figure 47 Filtration bag replacement 1 2 Figure 48 Filtration insert replacement Loosen wing-screws of the service panel 2. Remove the panel from the hinges 3. Remove the fi lter. First push its frame back (in the air fl ow direction), and then pull it from the guiding rails Loosen wing-screws of the service panel 2. Remove the panel from the hinges 3. Remove the fi lter by pulling its frame from the guiding rails. 3 32

33 Accessories LKR Manual Blade Dampers Operating Conditions LKR blade dampers are designed for outdoor application in air fl ow free of solid, fibrous, sticky or aggressive impurities. Figure 49 LKR Blade Damper LKR Blade Damper with a hand lever and mechanical position fixing LKS Driven Blade Dampers Operating Conditions The LKS blade dampers are designed for outdoor applications in air fl ow free of solid, fibrous, sticky, aggressive or explosive impurities. Installation, Maintenance and Service Before installation, paste self-adhesive sealing onto the connecting fl ange face. To connect the damper fl anges, use galvanized screws and nuts M8 (M10 only for dimensions and ). It is necessary to ensure conductive connection of the fl ange using fan-washers placed on both sides at least on one fl ange connection. To brace the fl anges with a side longer than 40 cm, it is advisable to connect them in the middle with another screw clamp which prevents fl ange bar gapping. If installed into a ceiling, space for the opening enabling inspection of the actuator must be taken into account. The damper must not be exposed during installation or operation to any torsion. After installation, it is necessary check free movement of the blades by pressing the release button on the actuator. Deformed blades can cause increased resistance, and the actuator will be automatically stopped. Figure 50 Connection of damper actuators LKS /24 LKS /230 Single conductor Double conductor LKSX Driven Blade Dampers Operating Conditions Regulační klapka je určena pro vnitřní i venkovní použití v proudu vzduchu bez pevných, vláknitých, lepivých, agresivních, případně výbušných příměsí. Installation, Maintenance and Service Before installation, paste self-adhesive sealing onto the connecting fl ange face. To connect the damper fl anges, use galvanized screws and nuts M8, for dimensions and use screws M10. It is necessary to ensure conductive connection of the fl ange using fanwashers placed on both sides at least on one fl ange connection. To brace the fl anges with a side longer than 40 cm, it is advisable to connect them in the middle with another screw clamp which prevents fl ange bar gapping. If installed into a ceiling, space for the opening enabling inspection of the actuator must be taken into account. The damper must not be exposed during installation or operation to any torsion. After installation, it is necessary to check free movement of the blades by pressing the release button on the actuator. Deformed blades can cause increased resistance, and the actuator will be automatically stopped. The wiring connection can be performed via the wiring terminal box. The actuator is equipped with a 1m long 3 x 0.75 mm2 cable. Figure 52 Connection of damper actuator LKSX..-.. /24 Figure 53 LKSX Blade Damper LKSX Blade Damper with actuator LM24X Figure 51 LKS Blade Damper LKS Blade Damper with actuators LM24 or LM230 33

34 Accessories LKSF Driven Blade Dampers Operating Conditions LKSF blade dampers are designed for indoor and outdoor use in air fl ow free of solid, fibrous, sticky, aggressive respectively explosive impurities. Installation, Maintenance and Service Before installation, paste self-adhesive sealing onto the connecting fl ange face. To connect the damper fl anges, use galvanized screws and nuts M8 (for dimensions and use screws M10). It is necessary to ensure conductive connection of the fl ange using fanwashers placed on both sides at least on one fl ange connection. To brace the fl anges with a side longer than 40 cm, it is advisable to connect them in the middle with another screw clamp which prevents fl ange bar gapping. If installed into a ceiling, space for the opening enabling inspection of the actuator must be taken into account. The damper must not be exposed during installation or operation to any torsion. After installation, it is necessary to check free movement of the blades by pressing the release button on the actuator. Deformed blades can cause increased resistance, and the actuator will be automatically stopped. The wiring connection can be performed via the wiring terminal box. The actuator is equipped with a 1m long 2 x 0.75 mm 2 cable. Figure 54 Connection of damper actuator LKSF..-.. /230 SKX Mixing Sections Operating Conditions Mixing sections are designed for indoor and outdoor applications in air fl ow free of solid, fibrous, sticky, aggressive respectively explosive impurities. Installation, Maintenance and Service Before installation, paste self-adhesive sealing onto the connecting fl ange face. To connect the flanges use galvanized screws and nuts M8. It is necessary to ensure conductive connection of the fl ange using fan-washers placed on both sides at least on one fl ange connection. To brace the fl anges with a side longer than 40 cm, it is advisable to connect them in the middle with another screw clamp which prevents fl ange bar gapping. If installed into a ceiling, space for the opening enabling inspection of the actuator must be taken into account. The mixing section must not be exposed during installation or operation to any torsion. After installation, it is necessary to check free movement of the blades by pressing the release button on the actuator. Deformed blades can cause increased resistance, and the actuator will be automatically stopped. The wiring connection can be performed via the wiring terminal box. The actuator is equipped with a 1m long 3 x 0.75 mm 2 cable. Figure 56 Actuator connection SKX..-.. /24 Figure 55 LKSF Blade Damper Figure 57 SKX Mixing Section LKSF Blade Damper with actuator LM230 and emergency function SKX Mixing Section with actuator LM24X 34

35 Accessories TKU Attenuators Operating Conditions TKU attenuators are designed for direct installation into square air ducts. They are intended for indoor use (when installed outside, they must be protected against water by a cover). Transported air must be free of solid, fi brous, sticky, aggressive impurities. Maximum air fl ow speed among splitters can be 20 m/s. If possible, we recommend putting a m long duct in front of the attenuator to balance partly the speed profi le of the air flow. Two successive attenuators can be used to increase insertion loss. Installation, Maintenance and Service Before installation, check the surface condition of attenuation splitters, and paste self-adhesive sealing onto the connecting fl ange face. To connect the damper fl anges, use galvanized screws and nuts M8, for dimensions and use screws M10. It is necessary to ensure conductive connection of the fl ange using fan-washers placed on both sides at least on one fl ange connection. To brace the fl anges with a side longer than 40 cm, it is advisable to connect them in the middle with another screw clamp which prevents fl ange bar gapping. If two successive attenuators are installed, they must be interconnected by the sides where the faces of the splitters match with the flange edge! Figure 58 TKU Attenuator EKP Drop Eliminators Operating Conditions Eliminated air must be free of solid, fi brous, sticky, aggressive impurities, and without corrosive chemicals or chemicals aggressive to zinc. Installation The installation, servicing and maintenance can be performed only by a specialized company possessing the appropriate tools. There is no need for individual suspensions to install the EKP drop eliminator. The drop eliminator can be inserted into the duct line, but it must not be exposed to any strain or torsion caused by the connected duct line. Before installation, paste self-adhesive sealing onto the connecting fl ange face. To connect individual parts of the Vento system, use galvanized screws and nuts M8. It is necessary to ensure conductive connection of the fl ange using fan-washers placed on both sides at least on one fl ange connection, or use Cu conductor wiring. Figure 59 Drop eliminator description vnější plášť, eliminátor kapek, vana na kondenzát, odvod kondenzátu 35

36 Accessories PK Pressure Dampers Operating Conditions The PK pressure damper is intended to be situated vertically on the air exhaust. Transported air must be free of solid, fibrous, sticky, aggressive impurities. Maximum air flow speed can be 6 m/s. Installation The standard version of the PK pressure damper must be installed with the longer side in the horizontal position while the blades are closed automatically (by gravity). The acceptable air fl ow direction is indicated in fi - gure #60. The pressure damper can be fi xed with wood or self-tapping screws to an ancillary wooden or steel frame, respectively to the flange of the air-handling unit. If used on a façade, it must be embedded 2 cm into the façade to cover its fixing frame. PZ Louvers Operating Conditions PZ louvers are designed for outdoor use. The louver must be installed vertically on the façade, on the exhaust or intake of the air-handling duct. Transported air must be free of solid, fi brous, sticky, aggressive impurities. Maximum air fl ow speed can be 6 m/s. Installation The standard version of the PZ louver must be installed with the longer side (blades) in the horizontal position. It can be fi xed with wood or self-tapping screws to an ancillary wooden or steel frame, respectively riveted to the air-handling duct wall. Holes for fi xing elements (wood or self-tapping screws, rivets) must be drilled into the louver side (see fi g #62). Figure 60 PK pressure damper installation Figure 62 PZ louver installation Plaster Fixing frame Wood screw Ancillary frame Damper frame Blade A B Louver frame Ancillary frame Fixing screw Blade N A N B N N Wood screw Plaster A Installation on ancillary frame B - Installation on fl ange of air-handling duct A Installation on ancillary frame B - Installation on fl ange of air-handling duct C- Fixing wood screw or rivet (holes must be drilled) Figure 61 PK pressure dampers Figure 63 PZ louver PK pressure damper without a brace up to the dimension incl. PK pressure damper with a brace dimensions to

37 Accessories DV Elastic Connections Operating Conditions Elastic connections can be used up to a pressure of 3000 Pa. They are not designed for mechanical loading, and cannot be used as a supporting part of the duct. The construction length is 155 mm, while the usable mounting (planning) length is 120 mm. Installation, Maintenance and Service Before installation, paste self-adhesive sealing onto the connecting fl ange face. To connect the flanges, use galvanized screws and nuts M8, for dimensions and use screws M10. It is necessary to ensure conductive connection of the fl ange using fan-washers placed on both sides at least on one fl ange connection. To brace the fl anges with a side longer than 40 cm, it is advisable to connect them in the middle with another screw clamp which prevents fl ange bar gapping. The elastic connection must not be mechanically loaded during operation. If installed into a ceiling, space for inspection must be taken into account. Usually once a year, the elastic connections must be checked for tightness of the elastic insert and fl exibility of the PVC band. DK Elastic Connections Operating Conditions The same as DV elastic connections. Installation, Maintenance and Service Before installation, paste self-adhesive sealing onto the round connecting fl ange face. To connect the flanges, use galvanized screws and nuts M8 for dimensions up to 355, for dimensions from the 400 and up use screws M10. It is necessary to ensure conductive connection of the flange using fan-washers placed on both sides at least on one fl ange connection. The elastic connection must not be mechanically loaded during operation. If installed into a ceiling, space for inspection must be taken into account. Usually once a year, the elastic connections must be checked for tightness of the elastic insert and fl exibility of the PVC band. Figure 64 DV and DK elastic connections EP Flanges Installation These fl anges can be mounted on the free ends of a square duct of corresponding dimensions using self-tapping screws or rivets. They must be sealed with permanently fl exible cement. Figure 65 EP flange GK Flanges Installation These fl anges can be mounted on the free ends of a round duct of corresponding diameter using self-tapping screws or rivets. They must be sealed with permanently fl exible cement. Figure 66 GK flange Humidification Information on installation, connecting, operation and maintenance are included in the documentation delivered with the humidifi er. Figure 66 Steam humidification section DV elastic connection DK elastic connection 37